地铁振动激励下地面及地上建筑结构的响应研究

发布时间：2018-03-09 00:21

本文选题：地铁振动　切入点：实测　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：伴随着社会经济的飞速发展,城市的规模越来越大,城市地铁的发展也越来越快,地铁运行引起的振动对地面及地上建筑结构的影响问题越来越受到人们的重视,开展针对地铁振动激励下地上建筑结构的响应研究已经十分必要。本文研究服务于华南理工大学亚热带建筑科学国家重点试验室地铁引起的振动对不同类型结构的影响研究这一课题,主要研究地铁对沿线框架结构的影响。对广州地铁三号线穿过的华南理工大学国家科技园1号楼与2号楼区间内地铁引起地面振动、华南理工大学国家科技园1号楼、东一区东一集四号、十六号、二十一号楼的振动响应进行实测,并借助有限元软件SAP2000建立华南理工大学国家科技园1号楼、东一区东一集十六号、二十一号楼的三维模型,结合现场实测数据进行研究。本文主要进行以下几个方面的研究： (1)根据地面振动实测数据,分析得到地铁运行在地面的传播规律；将实测数据转换为傅里叶谱进行频谱分析,得到地铁振动的频率组成与在各频段的分布情况,为今后进行地铁沿线隔震的研究提供了参考依据；根据规范将振动加速度换算为振动加速度级并与限值进行比较,得到地铁沿线地面的振动水平。 (2)对华南理工大学国家科技园1号楼、华南理工大学东一区东一集四号楼、十六号楼、二十一号楼进行竖向振动的实测,并建立了华南理工大学国家科技园1号楼、华南理工大学东一区东一集十六号楼、二十一号楼的有限元模型进行仿真分析。通过实测与数值分析得到了地铁振动在框架结构中的传播规律与振动响应特性,并得到地铁沿线建筑结构的振动水平。 (3)通过改变框架结构的各项参数,对比分析计算结果,得到了梁截面、柱截面、板厚、楼层层数与层高的改变对建筑结构地铁振动响应的影响,并对地铁沿线建筑结构的设计提出建议。
[Abstract]:With the rapid development of social economy, the scale of the city is becoming larger and larger, and the development of urban subway is also getting faster and faster. People pay more and more attention to the impact of the vibration caused by the operation of the subway on the structure of the ground and above ground buildings. It is necessary to study the response of above-ground building structure under vibration excitation of subway. This paper is devoted to the study of the effect of the vibration caused by the subway in the State key Laboratory of Subtropical Architectural Sciences of South China University of Technology on different types of structures. This paper mainly studies the influence of subway on the frame structure along the line. The ground vibration is caused by subway in the section of the National Science and Technology Park of South China University of Science and Technology, No. 1 National Science and Technology Park, South China University of Technology, which passes through Guangzhou Metro Line 3. The vibration responses of buildings 4, 16, and 21 of East one District East are measured. With the help of the finite element software SAP2000, a three-dimensional model of Building 1, Building 16 and Building 21 of the National Science and Technology Park of South China University of Science and Technology is established. This paper mainly studies the following aspects:. 1) according to the measured data of ground vibration, the propagation law of subway running on the ground is analyzed, and the frequency composition and distribution of subway vibration in each frequency band are obtained by converting the measured data into Fourier spectrum for spectrum analysis. The paper provides a reference for the future study of isolation along the subway line, converts the vibration acceleration into the vibration acceleration level according to the specifications and compares with the limit value, and obtains the vibration level of the ground along the subway line. (2) the vertical vibration measurements were carried out on Building 1 of the National Science and Technology Park of South China University of Science and Technology, the East 1st Building of East first District of South China University of Science and Technology, Building 16, Building 21, and Building 1 of the National Science and Technology Park of South China University of Science and Technology. The finite element model of Building No. 16 and Building 21 of East 1st East District of South China University of Science and Technology is simulated and analyzed. The propagation law and vibration response characteristics of subway vibration in frame structure are obtained through actual measurement and numerical analysis. The vibration level of the building structure along the subway line is obtained. By changing the parameters of the frame structure and comparing the calculation results, the effects of the beam section, column section, plate thickness, floor number and height on the vibration response of the subway are obtained. Suggestions on the design of the building structure along the subway line are also put forward.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U211.3;TU311.3

【参考文献】